MIT’s ‘smart surface’ could improve your WiFi signal tenfold

There's a problem with stuffing wireless connections into ever-smaller devices: they can struggle to maintain a good signal when there's so little space for antennas. MIT CSAIL researchers might have a fix, though. They've developed an RFocus "smar...

This four-inch antenna could let you text from deep underground

There's a reason that scuba divers use sign language and that caves and tunnels create radio dead zones. The laws of physics prevent radio signals from penetrating materials like water, soil and stone, and that's been a frustrating limitation of mode...

Qualcomm’s 5G antennas are primed for next year’s phones

One of the biggest challenges in tapping millimeter waves (mmWaves) for 5G is overcoming signal interference. Because they're easily disrupted by something as simple as someone walking in between a transmitter and receiver, mmWaves require technologi...

The best indoor HDTV antenna

By Grant Clauser This post was done in partnership with Wirecutter, reviews for the real world. When readers choose to buy Wirecutter's independently chosen editorial picks, it may earn affiliate commissions that support its work. Read the full art...